package com.headingdata.exercise;

public class Test8 {

    public static void main(String[] args) {
        // 九九乘法表
       /*
        1*1=1
        2*1=2	2*2=4
        3*1=3	3*2=6	3*3=9
        4*1=4	4*2=8	4*3=12	4*4=16
        5*1=5	5*2=10	5*3=15	5*4=20	5*5=25
        6*1=6	6*2=12	6*3=18	6*4=24	6*5=30	6*6=36
        7*1=7	7*2=14	7*3=21	7*4=28	7*5=35	7*6=42	7*7=49
        8*1=8	8*2=16	8*3=24	8*4=32	8*5=40	8*6=48	8*7=56	8*8=64
        9*1=9	9*2=18	9*3=27	9*4=36	9*5=45	9*6=54	9*7=63	9*8=72	9*9=81
        */
        print99();
        //打印 * 上
        /*
         *    *
         *   ***
         *  *****
         * *******
         * * */
        printHill(10);
    }
    public static void print99(){
        for (int i = 1; i <= 9 ; i++) {

            for (int j = 1; j <= i; j++) {
                System.out.print(i + "*" + j +"=" + i * j +"\t" );
            }
            System.out.println();
        }
    }

    public static void printHill(int number){
        for (int i = 1; i <= number ; i++) {

            for (int j = 1; j <= number-i; j++) {
                System.out.print(" ");
            }
            for (int j = 1; j <= (2 * i - 1); j++) {
                System.out.print("*");
            }
            System.out.println();
        }
    }
}
